Epilepsy Clinical Trial
Official title:
Mechanisms of Amygdala-Mediated Memory Enhancement in Humans
The objective is to understand how amygdala activation affects other medial temporal lobe structures to prioritize long-term memories. The project is relevant to disorders of memory and to disorders involving affect and memory, including traumatic brain injury and post-traumatic stress disorder.
Status | Recruiting |
Enrollment | 90 |
Est. completion date | November 1, 2027 |
Est. primary completion date | November 1, 2026 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 18 Years to 75 Years |
Eligibility | Inclusion Criteria: - Must be able to understand and speak English. - Able to provide informed consent. - Diagnosed with epilepsy. - Scheduled to undergo long-term intra-cranial video monitoring for seizure onset localization. - Must be implanted with intracranial depth electrodes to the left or right amygdala, hippocampus, and parahippocampal/perirhinal cortices. Exclusion Criteria: - Unable to understand and speak English. - Unable to provide informed consent. - Not diagnosed with epilepsy. |
Country | Name | City | State |
---|---|---|---|
United States | Washington University School of Medicine | Saint Louis | Missouri |
Lead Sponsor | Collaborator |
---|---|
Washington University School of Medicine |
United States,
Bass DI, Manns JR. Memory-enhancing amygdala stimulation elicits gamma synchrony in the hippocampus. Behav Neurosci. 2015 Jun;129(3):244-56. doi: 10.1037/bne0000052. — View Citation
Bass DI, Nizam ZG, Partain KN, Wang A, Manns JR. Amygdala-mediated enhancement of memory for specific events depends on the hippocampus. Neurobiol Learn Mem. 2014 Jan;107:37-41. doi: 10.1016/j.nlm.2013.10.020. Epub 2013 Nov 8. — View Citation
Bass DI, Partain KN, Manns JR. Event-specific enhancement of memory via brief electrical stimulation to the basolateral complex of the amygdala in rats. Behav Neurosci. 2012 Feb;126(1):204-8. doi: 10.1037/a0026462. Epub 2011 Dec 5. — View Citation
Inman CS, Manns JR, Bijanki KR, Bass DI, Hamann S, Drane DL, Fasano RE, Kovach CK, Gross RE, Willie JT. Direct electrical stimulation of the amygdala enhances declarative memory in humans. Proc Natl Acad Sci U S A. 2018 Jan 2;115(1):98-103. doi: 10.1073/pnas.1714058114. Epub 2017 Dec 18. — View Citation
Manns JR, Bass DI. The amygdala and prioritization of declarative memories. Curr Dir Psychol Sci. 2016 Aug;25(4):261-265. doi: 10.1177/0963721416654456. — View Citation
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Free recall memory discriminability index (proportion recalled) | Proportion of items (objects, associations, and scenes) accurately recalled during the delayed recall trial will be compared with and without BLAES for each participant in a within subject design. Subsets of items may be tested after durations up to a month after initial presentation. | 5 years | |
Primary | Recognition memory discriminability index (proportion recalled) | Proportion of items (objects, associations, and scenes) accurately recognized during the delayed recognition trial will be compared with and without BLAES for each participant in a within subject design. Subsets of items may be tested after durations up to a month after initial presentation. | 5 years | |
Secondary | Location of single pulse evoked potential (SPEP) response to amygdala stimulation | Measured by presence of the evoked potential in different brain subregions (hippocampus, entorhinal cortex, perirhinal cortex, and parahippocampal cortex). | 5 years | |
Secondary | Amplitude of SPEP response to amygdala stimulation | Measured in microvolts. | 5 years | |
Secondary | Latency of SPEP response to amygdala stimulation | Measured in milliseconds. | 5 years | |
Secondary | Local field potential (LFP) of good memory state | Measured by relative power spectral frequency recorded at time of item presentation that predicts accurate subsequent memory performance. | 5 years | |
Secondary | LFP of bad memory state | Measured by relative power spectral frequency recorded at the time of item presentation that predicts inaccurate subsequent memory performance | 5 years |
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